#151B6A#151B6A

#151B6A is a dark, vivid blue. Relative luminance 0.020; OKLCH L 28.2% C 0.134 H 270.9°. Best body text is #FFFFFF at 15.03:1 contrast (WCAG AA passes).

Color values

HEX	#151B6A
RGB	rgb(21, 27, 106)
HSL	hsl(236, 67%, 25%)
HSV	hsv(236, 80%, 42%)
CMYK	cmyk(80.2%, 74.5%, 0%, 58.4%)
CIE-LAB	lab(15.40, 27.80, -46.42)
CIE-LCH	lch(15.40, 54.11, 300.91°)
OKLab	oklab(28.22% 0.002 -0.1344)
OKLCH	oklch(28.22% 0.134 270.9)
XYZ	xyz(3.3018, 1.9835, 13.8417)
Luminance	0.0198 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151B6A #6A6415

analogous

#15456A #151B6A #3A156A

triadic

#151B6A #6A151B #1B6A15

tetradic

#151B6A #6A1545 #6A6415 #156A3A

square

#151B6A #6A1545 #6A6415 #156A3A

split-complementary

#151B6A #6A3A15 #456A15

monochromatic

#05071A #0B0E37 #151B6A #1F289D #2935D0

Accessibility & contrast

On white

15.03

#151B6A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.40

#151B6A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151B6A

15.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151B6A	#FFFFFF	#000000	##FFFFFF
##151B6A	1.00	15.03	1.40	15.03
#FFFFFF	15.03	1.00	21.00	1.00
#000000	1.40	21.00	1.00	21.00
##FFFFFF	15.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002B6C

Deuteranopia (green-blind)

#002269

Tritanopia (blue-blind)

#003140

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #151b6a;
/* rgb */ color: rgb(21, 27, 106);
/* oklch */ color: oklch(28.2% 0.134 270.9);

Tailwind

colors: {
  custom: {
    50: '#635896',
    500: '#151b6a',
    950: '#000000',
  },
}

SCSS

$custom: #151b6a;
$custom-light: #635896;
$custom-dark: #000000;

JSON

{
  "hex": "#151b6a",
  "rgb": {
    "r": 21,
    "g": 27,
    "b": 106
  },
  "hsl": {
    "h": 235.765,
    "s": 66.929,
    "l": 24.902
  },
  "oklch": {
    "l": 0.28218,
    "c": 0.13441,
    "h": 270.9
  },
  "luminance": 0.01984
}

Semantic roles & 50–950 ramp

primary

#151B6A

secondary

#A1993A

accent

#DE3EEA

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06030D

muted

#7A787E

Preview Lab

Preview with #151B6A

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →